<template>
  <div class="my-tab-bar">
  	<div class="tab-item" v-for="(obj,index) in arr" :key="index"
     @click="btn(index,obj)"
     :class="{current:index===TabName}"
    
     >
     <!-- 图标 -->
     <span class="iconfont" :class="obj.iconText"> </span>
     <!-- 文字 -->
      <span>{{obj.text}}</span>
   
    </div>
  </div>
</template>

<script>
export default {
  data(){
    return{
      TabName:0,
    }
  },
  props:{
    arr:{
      type:Array,
      required:true,
      validator(value){
         if(value.length>=2 && value.length<=5){
          return true
         }else{
          console.error('数据源必须2-5项')
          return false
     }      
      }
    }
  },
 methods:{
  btn(ind,obj){    
     this.TabName=ind  
     this.$emit('changeName',obj.componentName)
  }
 },
}
</script>

<style lang="less" scoped>
 .my-tab-bar {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 50px;
  border-top: 1px solid #ccc;
  display: flex;
  justify-content: space-around;
  align-items: center;
  background-color: white;
  .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}
    
.current {
  color: #1d7bff;
} 
</style>